1967. Sixth Edition. 356 pages. Illustrated dust jacket over brown cloth boards. Gilt lettering. Contains black and white and colour illustrations. Clean pages and illustrations with light tanning and mild foxing throughout. Pencil markings to front pastedown. Top textblock edge dyed red. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Gilt lettering is bright and clear. Unclipped jacket. Panels and spine have light edgewear with tears and creases. Minor wear marks to spine and panels. Jacket is in removable plastic cover.